Gaya APA
Chugh, C., Parkash, A.
(1971).
Diamond drilling
(
1971)
.
:
New Delhi : Oxford & IBH Pub.Co.,.
Gaya MLA
Chugh, Ch., Parkash, Ar.
"Diamond drilling".
1971
:
New Delhi : Oxford & IBH Pub.Co.,,
1971.
Text.